Which character trait is necessary for a person to be in a healthy relationship?idk

I think it’s trust because if you don’t trust them mostly likely you would get jealous because you might think they are gonna cheat on you and get jealous if they talk to someone you might think there flirting and everything will go down hill I think not sure

Well if you pick a machine to work on and that's gonna be your exercise if you don't stick to that machine your muscle strength your muscle mass rather will change because you haven't been doing it you change something in your exercise routine which changes your body's form of dealing with things for example you might become weaker or stronger depending on what kind of exercises you do in whether or not the machine you picked actually your muscles grow.